I've never been able to work out if Bear Grylls is stupid or very, very clever. I've always rather assumed the former but I'm coming round to the idea that he might be a great deal brighter than I imagined. After all, he's managed to create an extremely successful career out of getting people to take him seriously when he jumps into the middle of the ocean, swims for five miles, eats a dead armadillo, drinks his own piss, climbs a mountain and leaps into a helicopter in shows such as Born Survivor.

Worst-Case Scenario is basically more of the same. Grylls gets himself into a life-threatening situation and then gets himself out of it. Finding himself trapped upside down in a crashed car, Grylls informs us that "the first priority is to get out". Mmm. Maybe that insight was for the American market. He then kicks in the window and gets out. I rather think I might have managed that myself.

Thankfully, things rapidly get far more extreme. Grylls watches a bloke on a jetski circling a rowing boat for a few minutes before deliberately ramming him. Luckily, Grylls is already in a wetsuit so he can survive the swim in freezing cold water to rescue both of them. He then dashes off in his car with a tyre round his bumper to save a woman whose car has hit a power cable.

I can't believe anyone watching this is really taking notes in case they ever find themselves in the same situations. So to save you the bother, I was. Always make sure you know where the valves are in case the building you're in gets hit by an earthquake. If you're being chased by wild dogs, make them jump into a dustbin. And if you're stuck in a refrigeration plant, wrap yourself up in clingfilm and eat raw eggs.

The real worst-case scenario, of course, is that you find yourself having to watch the whole box set in one sitting. But if you limit yourself to the odd half-hour, you can treat it as a sitcom.